Effects of the pretreatment method on high solids enzymatic hydrolysis and ethanol fermentation of the cellulosic fraction of sugarcane bagasse

被引：82
作者：
da Silva Martins, Luiza Helena [1 ]
Rabelo, Sarita Candida [2 ]
da Costa, Aline Carvalho [1 ,2 ]
机构：
[1] Univ Estadual Campinas UNICAMP, Fac Engn Quim, Campinas, SP, Brazil
[2] CNPEM, Lab Nacl Ciencia & Tecnol Bioetanol CTBE, Campinas, SP, Brazil
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 191卷
基金：
巴西圣保罗研究基金会;
关键词：
Sugarcane bagasse; Pretreatment; Enzymatic hydrolysis; High solids concentration; Hexoses fermentation; HYDROGEN-PEROXIDE PRETREATMENT; DILUTE-ACID PRETREATMENT; CORN STOVER; BIOMASS; OPTIMIZATION; INTEGRATION; STRATEGIES; BIOETHANOL; LOADINGS;
D O I：
10.1016/j.biortech.2015.05.024
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
This work evaluated ethanol production from sugarcane bagasse at high solids loadings in the pretreatment (20-40% w/v) and hydrolysis (10-20% w/v) stages. The best conditions for diluted sulfuric acid, AHP and Ox-B pretreatments were determined and mass balances including pretreatment, hydrolysis and fermentation were calculated. From a technical point of view, the best pretreatment was AHP, which enabled the production of glucose concentrations near 8% with high productivity (3.27 g/L h), as well as ethanol production from 100.9 to 135.4 kg ethanol/ton raw bagasse. However, reagent consumption for acid pretreatment was much lower. Furthermore, for processes that use pentoses and hexoses separately, this pretreatment produces the most desirable pentoses liquor, with higher xylose concentration in the monomeric form. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：312 / 321
页数：10
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